OPERATING your Breville Duo-Temp™ espresso machine
The Grind
If using a
If grinding coffee beans, the grind should be fine but not too fine or powdery. The grind will affect the rate at which the water flows through the coffee in the Filter and therefore the taste of the coffee.
If the grind is too fine (looks like powder and feels like flour when rubbed between fingers), the water will not flow through the coffee even when under pressure. The resulting coffee will be over extracted, too dark and bitter, with a mottled and uneven crema on top.
If the grind is too coarse the water will flow through the coffee too quickly. This will result in an
Tamping The Coffee
After measuring the ground coffee into the Filter it must be tamped (pressed down) using the flat end of the measuring spoon. The ground coffee should be tamped quite firmly.
If the coffee is not tamped firmly enough, the water will flow through the water too quickly and the coffee will be under extracted. If the coffee is tamped too firmly, however, the water will flow through the coffee too slowly and the coffee will be over extracted.
NOTE
The taste of your coffee will, of course, depend on personal preference and on many other factors such as the type of coffee bean used, the coarseness or fineness of the grind and the tamping pressure (pressed down). We recommend experimenting by varying these factors to achieve the coffee taste of your preference.
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